TY  - BOOK
AU  - Vavilov,Nikolai Ivanovich
AU  - Chester,K.Starr
TI  - The origin, variation, immunity and breeding of cultivted plants
U1  - 134 
PY  - 1951///
CY  - Waltham
PB  - Mass, Chronica Botanica
KW  - Agricultural productivity
KW  - Fertilizers
KW  - Farm management
KW  - Agriculture
ER  -